Friction clutch and coupling.



L. TAYLOR. FRICTION CLUTCH AND COUPLING.

APPLICATION FILED FEB-J- 19I4r 1,142,541 I Patented June 8, 1915.

3 SHEETS-SHEET I.

WITNESSES- 1NVENTOR..'

THE NORRIS PETERS CO., PHOTC-LlTHO. WASHINGTON. D. C.

L. TAYLOR.

FRICTION CLUTCH AND COUPLING.

v I APPLICATION FILED FEB-7.19i4. 1,142,541 Patented June 8, 1915.

s SHEETS-SHEET 2.

INVENTOR.

WITNEISSES. I E

By his attorney,

THE NORRIS PETERS CO, FHOTO-LITHOI, WASHINGTON. D, C.

L. TAYLOR.

FRICTION CLUTCH AND COUPLING. APPLICATION FILED FEB. 7, 1914.

Patented June 8, 1915.

3 SHEETSSHEET 3 (Lg I WITNESSES.

INVENTOR. iwaw/rol/ Mr 3}} his fiflfornyi gw THE NORRIS PETERS 6a.,FHOTC-LITHQ, WASHINGTON, D, C.

LEONARD TAYLOR, or SLATTOCKS, CASTLETON, ENGLAND.

FRICTION cLuTcH AND, COUPLING.

" To all whom it may concern: 7'

Be it known that I, LEONARD TAYLOR, a subject of the King of GreatBritain and Ireland, residing at 17 Thornham Lane, Slattocks, Castleton,in the county of Lancaster, England, have invented new and usefulImprovements inFriction Clutches and Couplings, of which the followingis a specification.

This invention relates to a friction clutch or coupling of that type inwhich the clutching effect is obtained by contracting or bindingflexible encircling metallic or other bands around annular or curvedfacings by acting on pivoted levers or like band controlling gear. I

Theimproved clutch incorporates in its construction one, two, or moreflexible bands which are housed by and act on the clutch casing, whichcasing also effectively houses two pivoted levers fulcrumed upon aflanged boss.

This flanged boss also supports a simple clutch actuating lever,fulcrumed thereto, and which is. worked by a sliding sleeve andintermediate link. I also provide means which tend to prevent the studs,upon which the pivoted levers are fulcrumed, from moving apart, andarrangements for this purpose are shown,

The drawings illustrate the improved clutch and its details, and, insaid drawings: Figure 1 shows a front view of the clutch.

Fig. 2 is a cross-section. the clutch being illustrated as in gear. Fig.2 is a detail view showing the use of one flexible band. Fig. 3 shows adetail section of means which mav be utilized to resist any tendency ofthe studs or centers for the pivoted levers to move apart during actualworking. such means including a slotted plate, &c. Fig. 4 is a detailrear elevation of part of Fig. 3

and shows clearly said slotted plate.

In making my improved clutch I key or otherwise secure upon the drivingshaft a a suitable boss-like casting b and this casting is formed withlugs or ears 6 to support the fulcrum b of an actuating lever a to behereafter described. This boss-like casting b is also provided with aflange b which supports, in curved slots cl formed therein, twoadjustable pins or studs d and upon each of said studs or on a sleeveap- -plied thereto is fulcrumed levers of apthe casting b and in suchmanner that the Specification of Letters Patent.

Applicatiorifiled. February 7, 1914. Serial No. 817,129.

Patented June 8, 1915.

ends of said arms lie adjacent to the actuating lever 0 but in a planeat right-angles thereto. The said ends, of the levers are recessed orformed with bored ears to take each a small anti-friction bowl e.

To the short and approximately straight illustrated by the full linesFig. 2, so that when the clutch is looked at end-on one band liesexactly in the rear of the other. The flexible band 7"" or the two bandsfiencircle flanges g, g cast on the halves g, g of the inclosing drum orclutch cover and the endsof the band or hands is orare suitably pivotedor jointed to the pins 6 at the ends of the short arms of the levers e.

The inclosing drum or clutch casing is madein parts,and, as stated,preferably in two parts, 9/, g, the one being conveniently turned withan annular inside flange and the other with an annular inside flangeand. a

the flanges abut, the two halves inclose the levers, the boss-likecasting, and entirely mask the flexible band orbands. The two halves g,g can be readily put together and may be held by bolts or the likeapplied at intervals.

To operate the clutch, I use a sliding sleeve 7; fitting on the drivingshaft (1 and this sleeve has pivoted thereto at h a link i, or the likeequivalent, which in turn is pivoted at 2" to the clutch actuating lever0. This clutch actuating lever has a double wedge shaped portion aformed therewith or applied thereto, or, otherwise has inclined orcurved faces, and which shaped portions the levers. I

When the sleeve h is pushed-in, the wedges or faces 0 on the actuatinglever 0 force the bowls e apart, and so acting on the levers e theflexible bandor bands f is or are tightly'contracted around the annular.flanges g. the actuating lever omoves inward, the bowls approach, andthevflexible band or hands is or are released.

I The pivot studs d for the levers fit, as

stated, in curved slots in the cast flange 5 long boss. Thus, when puttogether so that By withdrawing the sleeve h,

and are held in place by the nuts (Z and by other screwed studs Zarranged at rightangles and which screwed studs (Z serve to set-up orprovide for adjustment of the pivot studs cl when a flexible band wears.

In order to resist any tendency of the studs cl (Z to move apart when atwork, I may utilize the locking arrangement shown atlTigs. 3 and 4:.According to this I fit a wrought iron plate j behind the bored bossesof the pivoted levers c e and in connection with said studs. Thiswrought-iron plate is bored to fit over one stud, being held in place bya split pin d and is also formed with an inclined portion 7" which isslotted at y' and countersunk at j The inner face of the head of theother stud (Z is inclined at CF and the head is squared so that the boltis held against rotation. Both studs (Z, (V are held by the nuts (Z andthe stud cl has a sleeve This modified construction is such that so longas the nuts (5 hold on the stud (Z then the studs cannot move apartbecause the incline resists movement of the stud (21*. By the provisionof the slot 1' adjustment of the stud (Z relatively to the stud d isprovided for.

The drive from the improved clutch may be taken from the casing, as by apulley on the long boss, but, as to this I do not restrict myself Theclutch described, is cheap and simple in construction, and the flexiblebands, le' vers, and actuating lovers are all well inclosed. Such aclutch is also well balanced and adapted to work without jar.

The clutch is very compact and all the working parts are easily got at.

I declare that what I claim is:

l. A clutch or coupling comprising, a boss to fit a shaft, a movableactuating lever pivotally supported from said boss, a wedge on thelever, pivoted levers supported by the boss and adapted to be actuatedby the wedge of said actuating lever, a casing surrounding said boss andpivoted levers, flanges in said casing, and flexible bands connected tosaid pivoted levers and adapted to be contracted around said flanges bythe pivoted levers when the actuating lever is moved, and sliding meansto operate said actuating lever.

2. A. clutch or coupling comprising, an

inclosing casing, turned inner peripheries inside said casing, aninclosed flexible metal band adapted to be contracted upon the turnedinner periphery, a boss Within the casing, pivoted levers on said boss,pivotal connecting means between the said levers and the flexible band,a movable actuating lever pivotedto the boss, a wedge on the actuatinglever and adapted to engage said pivoted levers for operating thelatter, and slidable actuating gear consisting of a sleeve and link foroperating the actuating lever whereby said pivoted levers are actuatedto operate the flexible band, as described.

3. A clutch or coupling having a boss,

pivoted levers carried by said boss, a clutch casing made in halves andinclosing said boss, turned inner peripheries on said halves, flexiblebands connected with said levers and adapted to'enga'ge with saidperipheries, said levers and bands being completely housed within saidcasing, a movable actuating lever fulcrumed on the boss, said actuatinglever being formed with a wedge portion adapted to operate said pivotedlevers and a sliding sleeve connected with said actuating lever foroperating the latter, as described.

4. A clutch .or coupling comprising, a boss, a clutch casing entirelysurrounding the boss, inner peripheries in the casing, flexible bands,pivoted levers to which said bands are connected, pivots for said leverslocated on the inside of the clutch casing, means to resist separationof the pivots for said levers, and a movable actuating lever pivoted tothe boss and having a wedge which operates said pivoted levers, asdescribed.

5. A clutch or coupling device comprising a shaft, a boss to fit saidshaft, a clutch casing surrounding the boss, inner peripheries in saidcasing. a flexible band, pivoted levers on said boss for operating saidband and to which said band is connected and center studs therefor,means to resist separation of such studs, consisting of a slotted plate,an inclined face to such plate, and a single movable actuating leverhaving a wedgeshaped portion and operated by sliding gear on the shaftto work the pivoted levers, a. described.

6. A. clutch or coupling device comprising, a boss, a clutch casingsurrounding the same, inner peripheries in saidcasing, levers on saidboss, a flexible band connected to said levers, pivoted studs for suchlevers, means to resist separation of said studs, a single movableactuating lever pivoted to the boss a wedge on such actuating lever foroperating said pivoted levers, and means for operating said actuatinglever.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LEONARD TAYLOR.

Witnesses RIoH'ARD W EBSTER IBBnRsoN, NORMAN KIERNAN.

. Copies of this patent may be obtained for five cents each, byaddressing the Gommissioner of Patents. Washington, D. G. 5

